Shahriar Velayat
Full Stack Software Engineer
- +989333285099
- [email protected]
- velayat.me
- Tehran - Iran
I am an accomplished software engineer with a strong background in web application development. Skilled in various aspects of software engineering, I have a demonstrated history of delivering high-quality solutions. With a focus on web application development, I am committed to driving innovation and excellence in software development.
Work Experiences
Senior Full-Stack Developer
Policytek.com — B2B Insurance Lead Distribution Platform
- Designed and developed a scalable B2B lead marketplace supporting multi-tenant workspaces, RBAC, configurable lead sources, distribution priorities, refund policies, duplicate detection, and daily allocation limits.
- Built and maintained a real-time lead and call routing platform integrated with Twilio, RingCentral, and Dialpad, implementing IVR, webhook processing, call transfers, concurrency limits, and intelligent lead distribution based on business rules.
- Engineered high-performance backend services using Node.js/NestJS, MongoDB, Redis, and PM2 clustering, ensuring safe concurrent processing through atomic database operations, cross-worker synchronization, and production-ready scheduled jobs.
- Developed comprehensive billing, reporting, and analytics features, including lead pricing snapshots, prepaid balance management, refund workflows, vendor performance dashboards, ROAS reporting, conversion tracking, and export integrations.
Senior Backend Developer
Building scalable backend systems and full-stack web applications for multiple products across health, IoT, and travel verticals.
- Developed scalable backend services for a multi-vendor online travel booking platform, supporting complex booking and order management workflows.
- Integrated third-party travel provider APIs and payment gateways while implementing secure transaction and refund processing.
- Designed and optimized RESTful APIs using NestJS, TypeORM, and PostgreSQL, improving maintainability and system performance.
- Built administrative tools for booking operations, reporting, user management, and business automation.
- Managed production infrastructure using Docker, Traefik, Nginx, and PM2, including deployments, SSL automation, monitoring, and performance optimization.
- Tools & Technologies: NestJS, Node.js, TypeScript, PostgreSQL, TypeORM, Docker, Traefik, Nginx, PM2, JWT
- Architected and developed a scalable backend platform for device lifecycle management, provisioning, authentication, and remote administration.
- Designed a real-time bidirectional communication system using WebSockets for device commands, telemetry, and event streaming.
- Built reliable command execution and event processing pipelines supporting thousands of connected IoT devices.
- Developed RESTful APIs for device management, user administration, firmware operations, and monitoring.
- Containerized services with Docker and optimized MongoDB data models for high-throughput real-time workloads.
- Tools & Technologies: NestJS, TypeScript, MongoDB, WebSocket, Docker, REST API
Sira.fit
Jun 2021 – Jun 2022
Health & fitness management app helping customers track and improve their wellbeing.
- Designed and developed RESTful APIs and real-time features using WebSocket
- Built mobile-first UI with Angular and Ionic Framework
- Tools & Technologies: NestJs, MongoDB, Angular, Ionic, WebSocket, Docker
Full Stack Developer
Developing custom mobile applications for businesses, handling both the front-end and back-end aspects
- Develope and Build Android / IOS Applications
- Design and Develop REST API
- Tools & Technologies : Ionic Framework,MySql,Angular,Wordpress,Php, Redmine Project Manager,Android Studio
Android Developer
Developing a Mobile Application for Shiraz University to collect traffic data.
Projects
X-Collision
- Designing and developing APIs specifically tailored for managing mobile games
- Tools & Technologies :MySql,Wordpress,Php,Redmine Project Manager